package com.eason.utils;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

//sqlSessionFactory --> sqlSession
public class MybatisUtils {

    private static  SqlSessionFactory sqlSessionFactory;
    private static final String resource = "mybatis-config.xml";

    static {
            try {
                InputStream inputStream = Resources.getResourceAsStream(resource);
                sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
            } catch (IOException e) {
                e.printStackTrace();
            }
    }

    //获得 SqlSession 的实例
    public static SqlSession getSqlSession(){
        return sqlSessionFactory.openSession();
    }

}
